KwickClips Computer Systems · 40 sec · free
What links the blocks?
Short answer. Hashes.
What happens if someone edits a block?
Its hash changes and a mismatch shows.
Remember
| Shared copy of the ledger |
| Blocks linked by hashes |
Why is a blockchain so hard to cheat? Everyone keeps the same ledger. Each block stores the last block's hash. The chain goes on. Edit a block, and a mismatch shows. Remember. Everyone shares one ledger. Hashes link the blocks.
This clip is from the full lesson: Emerging Trends: Cloud Computing, Grid Computing and Blockchain — 7 minutes, with the tables, the quick answers and the whole lesson in text.
Useful for: CBSE Class 11 Informatics Practices (065), GSEB Std 11 Computer Studies, Cambridge IGCSE Grade 9 Computer Science (0478), Cambridge IGCSE Grade 10 Computer Science (0478)
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